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BS 970 (Part 1) 708A25 vs EN 10083-1 25CrMo4

Strong Match — 86.5% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 708A25 (BS 970 (Part 1):1983) and EN 10083-1 25CrMo4 (EN 10083-1:1991) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 708A25 is typically used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6., while EN 10083-1 25CrMo4 is commonly used for quenched and tempered machine parts; non alloy steels also normalized (clause 1). BS 970 (Part 1) 708A25 is defined under British Standards (BS), originating from United Kingdom, while EN 10083-1 25CrMo4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 970 (Part 1) 708A25 vs EN 10083-1 25CrMo4 is a 86.5% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 86.5%.

Frequently Compared With BS 970 (Part 1) 708A25:
IS 11169 (Part 1) 12Cr4Mo2 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 11169 (Part 1) 10Ni5Cr4 IS 4367 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
86.5%
MECHANICAL MATCH
No shared data
OVERALL
86.5%
Specifications
Property BS 970 (Part 1) 708A25 EN 10083-1 25CrMo4
Standard BS 970 (Part 1):1983 EN 10083-1:1991
Category Alloy Steel Alloy Steel
C (%) 0.23-0.28 0.22-0.29
Mn (%) 0.50-0.80 0.60-0.90
Cr (%) 0.90-1.20 0.90-1.20
Mo (%) 0.15-0.25 0.15-0.30
P (%) <=0.035 <=0.035
S (%) <=0.040 <=0.035
Si (%) Not specified <=0.40
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 1) 708A25 EN 10083-1 25CrMo4
Condition Not specified Quenched and tempered, ruling section d <= 16 mm
Elongation Not specified 12% min
Hardness Not specified Soft annealed: 212 HB max
Tensile Strength Not specified 900 to 1100 MPa
Yield Strength Not specified 700 MPa min
Typical Applications
BS 970 (Part 1) 708A25
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
EN 10083-1 25CrMo4
Quenched and tempered machine parts; non alloy steels also normalized (clause 1)
Key Differences
Can BS 970 (Part 1) 708A25 Be Substituted With EN 10083-1 25CrMo4?
BS 970 (Part 1) 708A25 and EN 10083-1 25CrMo4 overlap closely enough on chemistry and mechanical properties that EN 10083-1 25CrMo4 is often considered as a substitute for BS 970 (Part 1) 708A25 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
BS 970 (Part 1) 708A25
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EN 10083-1 25CrMo4
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 708A25 and EN 10083-1 25CrMo4?
EN 10083-1 25CrMo4 specifies Si which is not specified for BS 970 (Part 1) 708A25.
Can BS 970 (Part 1) 708A25 be substituted with EN 10083-1 25CrMo4?
BS 970 (Part 1) 708A25 and EN 10083-1 25CrMo4 overlap closely enough on chemistry and mechanical properties that EN 10083-1 25CrMo4 is often considered as a substitute for BS 970 (Part 1) 708A25 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.